Dichlor dose calculator
PRODichlor (56%) to raise your free chlorine.
Short answer: oz = (gallons ÷ 10,000) × 0.23 × ppm to raise. 20,000 gal + 3 ppm FC = 1.4 oz dichlor. Enter your measurements above and the dichlor dose calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Dichlor
1.4 oz
CYA added
2.7 ppm
How does the dichlor dose calculator work?
oz = (gallons ÷ 10,000) × 0.23 × ppm to raise.
What does a worked example look like?
20,000 gal + 3 ppm FC = 1.4 oz dichlor.
What do people ask most?
›Watch CYA
Dichlor adds ~9 ppm CYA per 10 ppm FC — stop using once CYA is 50+.
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Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.